Spring seat or bottom.



Patented Feb. I9, I91. 0. S. MARSHALL & F. E. DAVIS.

SPRING SEAT OB BOTTOM.

(Application filed Oct. 12 1900.) (No Model.)

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NrrED STATES ATENT FFlCE.

CLINTON S. MARSHALL AND FRANK E. DAVIS, OF WORCESTER, MASSACHU- SETTS;SAID MARSHALL ASSIGNOR TO THE AMERICAN STEEL AND \VIRE COMPANY OF NEWJERSEY, OF NEW JERSEY.

SPRING SEAT OR BOTTOM.

SPECIFICATION forming part of Letters Patent N 0. 668,334, datedFebruary 19, 1901.

Application filed October 12, 1900. Serial No. 32,862. (No model-l Toall whom, it may concern.-

Be it known that we, CLINTON S. MARSHALL and FRANK E. DAVIS, citizens ofthe United States, and residents of Worcester, county of Worcester, andState of Massachusetts, have invented certain new and usefulImprovements in Spring Seats or Bottoms; and we do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

The invention relates to that type of springbottoms for beds, sofas,seats, and the like which comprises a series of helically-wound springsthat are secured to a supportingframework consisting of wires stretchedacross between the side pieces of the main structure. In this class ofbottoms the springs are set with their large ends uppermost, and

the coils or convolutions at their smaller ends are utilized to securethe springs to the supportingwires. This is often a difficult matter,owing to the fact that the lower-endcoils are of very small diametercompared with the height of the springs and the size of the coils attheir upper ends, on which the mattress or stuffing rests; and theparticular object of the present invention is to secure these springs ontheir supporting-wires, so that they shall 0 be locked firmly theretoand held erect and prevented from tipping overor being deflectedlaterally when the weight of the person is thrown upon them.

The invention is illustrated in the accompanying drawings, wherein-Figure l is a plan view of a chair-seat frame; and Fig. 2, across-section, the springs being shown in elevation.

Referring to the views, a denotes the frame of the seat. It may be ofany preferred size and shape and be made of any suitable material.Extending across the center of this frame are the wires b,which form thesupports for the springs 0. These wires are secured at 4.5 theiropposite ends to the side pieces of the seat frame in any preferredmanner. As herein shown, their outer ends are bent downwardly and driveninto the side pieces; but the invention is not limited to this or anyparticular means of fastening them.

The springs c are of the usual helical type and are arranged with theirlarge ends uppermost, so as to aiford the greatest amount ofsupporting-surface.

The supporting-wires b are preferably depressed below the uppersurfaceof the frame sides a, as best shown in Fig. 2,though we do not regardthis as at all essential. At those points along their length where thesprings are to be located these wires are formed with pairs ofupwardly-extending loops (1 d, and between the loops of each pair thewires are bent downwardly again preferably, though not necessarily, to apoint below the level of the main length of the wire, as indicated at ein Fig. 2. The number of these pairs of loops will of course depend onthe number of springs on each wire, and the size of the loops or thedistance apart of the individuals composing each pair will be determinedby the size of the wire employed and the diameter of the end coils ofthe springs. The height to which the loops extend upwardly is a matterof no particular consequence, provided they project sufliciently to passthrough the lower convolutions or coils of the springs and permit of theflaring of their upper ends, which latter is one of the importantfeatures of the improvement.

As illustrated in Fig. 2, the springs are set down over the loops withtheir small ends lowermost. The distance apart of the individual loopscomposing the pairs is accurately proportioned to the size of thesprings, so that they shall be closely encircled by the lowermost coils.The springs are thus supported by that portion of the wires outside theloops, and the depressed bend 6, between the loops, extends sufficientlybelow the lower end of the spring to permit a cross-wire fto 0 be passedat right angles to the supportingwires and threaded through the openingbe-' tween lowermost coil and the upper surface of the wires.

It will be noted from Fig. 2 that the crosswires f are thus located on alevel with the main length of the supporting-wires I). They thereforeafford additional points of support for the springs at diametricallyopposite points on the circle described by the lowermost coils. It isnot intended, however, that the wires f should perform any office inholding the springs down on the supportingwi res, this result beingobtained in the present arrangement by the flaring of the loops d d, aswill be apparent on inspectiou of Fig. 2.

The construction being as thus described, it will be noted that thereare four points of support for each springtwo on the supporting-wires band two others on the cross-Wires f. This arrangement gives the broadestpossible base to the springs and serves to prevent them from tipping.The springs are also braced and steadied against lateral deflection bythe flaring loops that fit snugly in the bottom coils and also serve toprevent the springs from being lifted off the supporting-wires. I

Having thus described our invention, what we claim is- 1. In aspring-seat, the combination of a helical spring, asupporting-wirepassed transversely across the lower end of the spring and formed into apair of loops projecting upwardly through and closely encircled by thelower convolution to brace and steady the spring, and a cross-wirepassing between the loops of the supportingnvire and below the lowerconvolution of the spring.

2. In a spring-seat, the combination of a helical spring, asupporting-wire passed transversely across the lower end' of the springand formed into a pair of flaring loops projecting upwardly into thespring and closely encircled by the lower convolution thereof to braceand steady the spring; and a cross-wire passed at rightangles to thesupporting-wire between its loops and between its upper surface and thelower convolution of the spring.

In testimony whereof we affix our signatures in presence of twowitnesses.

CLINTON S. MARSHALL; FRANK E. DAVIS.

Witnesses: v

GHAs. B. SANFORD, J. NELsoN CHAMPLIN.

